Holly Ann Mast, APRN
- Medicare patients, 2024
- 117
- Part D claims, 2024
- 3,289
- Hospital affiliations
- 1
- Industry payments
- $176
- Medical group
- 1
- Practice address
- 1330 Coshocton Road, Mount Vernon, OH 43050
- Practice phone
- Call (740) 393-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Holly Mast's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Holly Ann Mast is a family nurse practitioner in Mount Vernon, Ohio
Holly Mast practices at Knox Community Hospital in Mount Vernon, Ohio, part of Knox Community Hospital.
Holly Mast's NPI, 1407101728, was assigned on July 24, 2012. Holly Mast holds Ohio license 13353.
- NPI
- 1407101728NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870742661
- NPI enumeration date
- July 24, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (740) 393-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Holly Ann Mast practices at Knox Community Hospital in Mount Vernon, Ohio
Holly Mast's primary practice is Knox Community Hospital, at 1330 Coshocton Road, Mount Vernon, OH 43050 in Knox County. The practice phone is (740) 393-9000.
- Knox Community Hospital1330 Coshocton Road, Mount Vernon, OH 43050 · Knox CountyPhone(740) 393-9000
Source: Dmand AI Affiliation Data
Holly Ann Mast is affiliated with 2 sites of care and 1 medical group
Holly Mast's primary practice is Knox Community Hospital in Mount Vernon, Ohio, part of Knox Community Hospital. The medical group on file is Knox Community Hospital. Dmand AI also links Holly Mast to 1 more home health agency, named with a free account. Holly Mast's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Holly Ann Mast's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Holly Mast practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Knox Community Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Knox Community Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Holly Ann Mast is one of 7,779 family nurse practitioners in Ohio
Family is Holly Mast's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Holly Mast is licensed in Ohio.
Specialties and state licenses
- Family nurse practitioner, OhioPrimary
Family nurse practitioners near Holly Mast
Counts of family nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Holly Ann Mast treated 117 Medicare patients in 2024, average age 72
CMS counts 117 Medicare patients who saw Holly Mast in 2024. The largest group is 65 to 74, with 48 patients. 68% of them have high blood pressure, and 68% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Holly Mast's median patient age at 71, with 62% women.
Holly Mast's Medicare patients by age, 2024
Holly Mast's Medicare patients by sex, 2024
- Women7564%
- Men4236%
Chronic conditions among Holly Mast's Medicare patients, 2024
- High blood pressure68%
- High cholesterol68%
- Arthritis43%
- Mood disorders29%
- Diabetes28%
- Depression27%
- Ischemic heart disease27%
- Anxiety25%
Share of Medicare patients with each condition. A patient can have several.
Holly Mast's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Holly Ann Mast wrote 3,289 Medicare Part D claims in 2024
In 2024, Holly Mast wrote 3,289 Medicare Part D claims for 333 patients. 87% of them were for generic drugs.
Holly Mast's Part D claims by kind of drug, 2024
- Generic2,851 claims87%
- Brand-name399 claims12%
- Other39 claims1%
Drug classes CMS tracks in Holly Mast's Part D claims, 2024
- Opioids1%46 of 3,289 claims
- Antibiotics3%98 of 3,289 claims
- Antipsychotics, patients 65 and over0%13 of 3,289 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Holly Ann Mast offers telehealth to Medicare patients
Holly Mast accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Holly Mast as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Holly Ann Mast received $176 in industry payments in 2025
CMS Open Payments shows 9 general payments to Holly Mast from 5 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $41.
Companies that paid Holly Mast the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Holly Ann Mast's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Holly Ann Mast
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Holly Ann Mast's NPI number?
Holly Ann Mast's NPI number is 1407101728. It was assigned on July 24, 2012, and it is active in the NPI Registry.
What does Holly Ann Mast specialize in?
Holly Ann Mast is a family nurse practitioner in Mount Vernon, Ohio. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Holly Ann Mast practice?
Holly Mast practices at 1330 Coshocton Road, Mount Vernon, OH 43050. Holly Mast's primary practice is Knox Community Hospital in Mount Vernon, Ohio, part of Knox Community Hospital. Dmand AI also links Holly Mast to 1 home health agency.
What is Holly Ann Mast's office phone number?
The practice phone on file for Holly Mast is (740) 393-9000.
What is Holly Ann Mast's medical license number?
Holly Mast holds Ohio license 13353.
Which hospitals is Holly Ann Mast affiliated with?
Holly Mast practices at Knox Community Hospital in Mount Vernon, Ohio.
What medical group is Holly Ann Mast part of?
Holly Mast is linked to Knox Community Hospital.
Does Holly Ann Mast accept Medicare?
Yes. CMS lists Holly Mast as accepting Medicare assignment.
Does Holly Ann Mast offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Holly Mast as offering telehealth services.
How many Medicare patients does Holly Ann Mast see?
CMS counts 117 Medicare patients who saw Holly Mast in 2024, with an average age of 72.
Has Holly Ann Mast received payments from drug or device companies?
CMS Open Payments shows $176 in general payments to Holly Mast from 5 companies from 2025 to 2025. The largest total came from Amgen Inc.
How long has Holly Ann Mast been practicing?
Holly Mast graduated from medical school in 2012, 14 years ago.
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